The MAB is the UK affiliate of the Muslim Brotherhood, an international and complex network of Islamist organisations. Islamism is a political ideology that believes that predominantly Muslim countries should be run according to a form of government drawn from Islam’s holy book, the Quran. Islamism has many branches. Some Islamist groups are so extreme they are also terrorist – but that is not true for every such organisation. The MAB says it has long worked within the law and alongside agencies including the police.